When caring for a 3 year old with tetralogy of Fallot, he nurse expects to see fatigue and poor activity tolerance. This is caused by:

Correct Answer: B

Rationale: Tetralogy of Fallot is a heart defect that involves four specific abnormalities in the heart's structure. One of these abnormalities is a ventricular septal defect, which results in a mixing of oxygenated and deoxygenated blood. This leads to inadequate oxygenation of tissues because some of the blood that is pumped out to the body is not fully oxygenated. As a result, the child may experience fatigue and poor activity tolerance due to the reduced oxygen supply to the tissues and organs. This is why the nurse would expect to see these symptoms in a 3-year-old with tetralogy of Fallot.

Correct Answer: D

Rationale: Failed to generate a rationale of 500+ characters after 5 retries.

Correct Answer: B

Rationale: Hemophilia is an X-linked recessive genetic disorder, meaning it is carried on the X chromosome. Females have two X chromosomes, while males have one X and one Y chromosome. In this scenario, the female carrier has one X chromosome with the hemophilia gene and one normal X chromosome. When she has children, she has a 50% chance of passing on the X chromosome with the hemophilia gene to her sons. Therefore, half the male children will inherit hemophilia, while half will not. Daughters, on the other hand, have a 50% chance of inheriting the X chromosome with the hemophilia gene but since it is a recessive disorder, they will be carriers of hemophilia rather than having the disease itself.

Correct Answer: A

Rationale: Corticosteroids are not typically used in the treatment of heart insufficiency. The mainstay of treatment for heart insufficiency includes medications like oxygen, digoxin, diuretics, and sometimes blood transfusions of packed red blood cells. Corticosteroids are more commonly used to reduce inflammation and immune responses in conditions like asthma, arthritis, and certain autoimmune diseases.

Correct Answer: B

Rationale: A stabilized newborn generally has an apical heart rate in the range of 80 to 100 beats per minute. This range is considered normal for a healthy newborn. It is important for the nurse to monitor the newborn's heart rate closely to ensure that it remains within this expected range. Any significant deviation from this range may indicate an underlying health issue that needs to be addressed promptly. Monitoring heart rate is a critical aspect of newborn care, especially in the immediate postnatal period.